Bring the checklist app under version control

The project has lived only as a folder on the Mac Studio and, briefly, as a
transfer tarball. This is the first commit: the Express server and its web
front end, the Capacitor iOS and Android wrappers, and the release and backup
scripts.

The repo is the source, not a backup of the machine. Left out on purpose, by
the .gitignore files that were already in the tree: node_modules, build output,
mobile/www (regenerated from server/public on every build), and server/data,
which holds the live checklists and belongs on the NAS rather than in git.

Every credential is excluded too — server/.env, the Play upload keystore and
its properties file, the App Store Connect key and ios-signing.config. The one
secret that was not in an ignored file was the NAS SSH password, hard-coded in
build-deploy.sh and grepped back out of it by backup-to-drive.sh. Both now read
it from the login keychain (service checklist-nas, account Christian), falling
back to NAS_PASS in the environment, so rotating it is one keychain entry
rather than a history rewrite.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

server/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "recurring-checklist-server",
+  "version": "1.0.0",
+  "private": true,
+  "description": "Self-hosted web version of the Recurring Checklist app with weekly email digest",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node --watch server.js"
+  },
+  "engines": {
+    "node": ">=18"
+  },
+  "dependencies": {
+    "bcryptjs": "^3.0.3",
+    "dotenv": "^16.4.5",
+    "express": "^4.19.2",
+    "node-cron": "^3.0.3",
+    "nodemailer": "^8.0.7"
+  }
+}